72371339 has 4 divisors (see below), whose sum is σ = 72432024. Its totient is φ = 72310656.

The previous prime is 72371309. The next prime is 72371357. The reversal of 72371339 is 93317327.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72371339 - 2²⁰ = 71322763 is a prime.

It is a super-2 number, since 2×72371339² = 10475221417305842, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72371299 and 72371308.

It is not an unprimeable number, because it can be changed into a prime (72371309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28517 + ... + 30950.

It is an arithmetic number, because the mean of its divisors is an integer number (18108006).

Almost surely, 2^72371339 is an apocalyptic number.

72371339 is a deficient number, since it is larger than the sum of its proper divisors (60685).

72371339 is a wasteful number, since it uses less digits than its factorization.

72371339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60684.

The product of its digits is 23814, while the sum is 35.

The square root of 72371339 is about 8507.1345939746. The cubic root of 72371339 is about 416.7307388047.

The spelling of 72371339 in words is "seventy-two million, three hundred seventy-one thousand, three hundred thirty-nine".